Enter a domain name to check its SSL certificate
We'll analyze the certificate details, protocol, and security configuration
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Tool Information
Shortcuts
Ctrl + KEscEnterQuick Actions
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How to Use
Follow these simple steps to check any domain's SSL certificate.
Enter Domain
Type or paste the domain name you want to check.
Analyze
The tool fetches and analyzes the SSL/TLS certificate.
Review Details
View certificate info, chain, protocol, and security grade.
Take Action
Follow recommendations to improve your SSL configuration.
Why Use This Checker?
The fastest and most comprehensive SSL certificate checker online.
Instant Check
Get SSL certificate details for any domain in seconds.
Certificate Chain
View the full certificate chain from leaf to root CA.
Security Grade
Receive an A+ to F grade based on your SSL configuration.
Protocol Analysis
Check TLS version, cipher suite, and key strength.
Expiration Tracking
Know exactly when your certificate expires and act before it.
Export Reports
Copy or download detailed SSL reports for your records.
Frequently Asked Questions
What is an SSL certificate?
An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection. It ensures data transmitted between the user's browser and the server remains private and secure.
How does the SSL certificate checker work?
Enter a domain name and the tool connects to the server to retrieve the SSL/TLS certificate. It then analyzes the certificate details including issuer, validity dates, protocol version, cipher suite, and key strength.
What do the grades (A+, A, B, C, F) mean?
The grade reflects your SSL/TLS configuration quality. A+ is the best (modern protocol, strong key), while F indicates a critically insecure configuration (like SSL 3.0 or expired certificates).
How often should I check my SSL certificate?
Check your SSL certificate at least once a month. Set up automated monitoring to get alerts before expiration. Most certificates expire after 90-365 days depending on the issuer.
What is TLS and how does it differ from SSL?
TLS (Transport Layer Security) is the successor to SSL. Both provide encrypted communications. TLS 1.2 and 1.3 are current standards, while SSL 3.0 and TLS 1.0 are deprecated due to security vulnerabilities.
Is my domain data sent to any server?
No. All analysis is performed client-side in your browser. Your domain data is never transmitted to external servers, ensuring complete privacy.